Influence of Golden Nanoparticles on the Incorporation of Eu.sup.2+./sup. into BaI.sub.2./sub. and Defect Concentration

0573703 - ÚJF 2024 RIV CH eng J - Článek v odborném periodiku
Ridzonova, K. - Buryi, M. - Babin, V. - John, David - Drahokoupil, J. - Neykova, N. - Salamakha, T. - Tratsiak, Y.
Influence of Golden Nanoparticles on the Incorporation of Eu²⁺ into BaI₂ and Defect Concentration.
Crystals. Roč. 13, č. 6 (2023), č. článku 902. ISSN 2073-4352. E-ISSN 2073-4352
Institucionální podpora: RVO:61389005
Klíčová slova: barium iodide * Eu2+ * Au nanoparticles * luminescence * EPR
Obor OECD: Nano-materials (production and properties)
Impakt faktor: 2.7, rok: 2022
Způsob publikování: Open access
https://doi.org/10.3390/cryst13060902

Conjugated BaI2:Eu (5 at.%) nanocrystalline particles were synthesized, decorated with golden nanoparticles (GNP). GNP demonstrated some hydrophilic effect, leading to the BaI2 & BULL,H2O phase creation. The Eu2+ luminescence intensity was reduced according to the GNP content. This was due to the decreased number of Eu2+ ions in the BaI2, most probably, arising from the Au substitution for Ba competing with Eu. Moreover, the decay time of luminescence was decreased upon GNP content. This was explained by the moderation of negative charge in the GNP, leading to the repulsion with an electron in the excited Eu2+.
Trvalý link: https://hdl.handle.net/11104/0344074